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Adenoma malignum Radiology ultrasound

Microscopic parametrial invasion was seen in two patients but was not detected at MR imaging. CONCLUSION: Adenoma malignum was depicted on MR images as a multicystic mass with solid portions located in the deep cervical stroma. Gadolinium enhancement helped identify the solid portion of the tumor Background: Adenoma malignum, also known as minimal deviation adenocarcinoma, is a subtype of mucinous adenocarcinoma of the cervix. Purpose: To evaluate the clinical, pathologic, and imaging features of the adenoma malignum of the uterine cervix. Material and methods: We retrospectively analyzed the CT and MRI findings in 13 patients: size, endoluminal fluid, appearance of the solid and.

Adenoma malignum: MR imaging and pathologic study

Adenoma malignum, also known as minimal deviation adenocarcinoma, is a subtype of mucinous adenocarcinoma of the cervix Adenoma malignum— Adenoma malignum, also known as minimal-deviation adenocarcinoma, is a special subtype of mucinous adenocarcinoma of the cervix [ 1 - 3 ]. Its prevalence is about 3% of all cervical adenocarcinomas Despite normal biopsy and cytology, magnetic resonance imaging showed a large cervix and multiple cervical cysts that considered adenoma malignum as a differential diagnosis. She underwent surgery and the pathology confirmed the adenoma malignum

Adenoma malignum—Adenoma malig- num, also known as minimal-deviation ad- enocarcinoma, is a special subtype of mu- cinous adenocarcinoma of the cervix [1-3]

Despite normal biopsy and cytology, magnetic resonance imaging showed a large cervix and multiple cervical cysts that considered adenoma malignum as a differential diagnosis

Adenoma malignum of the uterine cervix: imaging features

Adenoma malignum (AM) of the cervix is a rare disease and it is difficult to diagnose due to the deceptively benign appearance of the tumor cells. These lesions have mucin-rich cystic lesions and are usually situated deep in the cervix. Since AM is very rare, standard screening tests, diagnostic tools and treatments have not yet been established component that is commonly seen with adenoma malignum. Ultrasound may be the initial imaging to use in patients that have an unconfirmed genitourinary malignancy, but MRI is more specific and better for staging as there is a higher resolution for soft tissues. 13. Bourgioti et. al. quantified the ability of MRI to accurately stage cervica Adenoma malignum was shown as a hyperechoic mass mixed with multiple cysts on US and a low attenuated endocervical mass on CT. We think that imaging demonstration of an endocervical mass is important for the correct diagnosis of adenoma malignum in a female with PJS All patients had hysterectomy and surgical FIGO staging was determined. Pathologically, adenocarcinoma of the cervix was divided into mucinous adenocarcinoma including adenoma malignum 253 254 Computerized Medical Imaging and Graphics July-August/1997, Volume 21, Number 4 (n =13), and endometrioid carcinoma (n = 7) Mucinous minimal deviation endocervical adenocarcinoma, also known as adenoma malignum, is a rare subtype of mucinous adenocarcinoma of the cervix; adenoma malignum is about 1-3% of endocervical adenocarcinoma. It shows no ethnic predilection and can present in a wide age range with average between the 5th and 6th decades of life. It can be associated with Peutz-Jeghers syndrome

Background: Minimal deviation adenocarcinoma (MDA, also reported as Adenoma Malignum) of the cervix is a rare variant of cervical carcinoma.It is thought to represent about 1% to 3% of all cervical adenocarcinomas. The symptoms can be multifarious and aspecific, however the most peculiar and recurrent is a persistent watery-mucoid vaginal discharge To evaluate the clinical, pathologic, and imaging features of the adenoma malignum of the uterine cervix. Material and Methods We retrospectively analyzed the CT and MRI findings in 13 patients: size, endoluminal fluid, appearance of the solid and cystic component, margin, enhancement, characteristics of locules of the cystic lesion, tumor. Well differentiated adenocarcinoma may exhibit similar imaging characteristics to adenoma malignum, as adenoma malignum is a well differentiated mucin producing adenocarcinoma (2, 6). In order for a cervical neoplasm to be considered adenoma malignum it should contain less than 10% of ordinary adenocarcinoma . Deciding where on the spectrum a. Teaching Point: Adenoma malignum is a rare, non-HPV associated subtype of mucinous adenocarcinoma of the cervix, of which we present an exceptional case that was discovered during the third trimester of pregnancy

Magnetic resonance imaging of adenoma malignum of the

  1. imal deviation adenocarcinoma (adenoma malignum) of the cervix. A report of seven cases. Am J Clin Pathol 1996;105:327-33. Crossref Medline ISI, Google Scholar. 11 Tsuruchi N, Tsukamoto N, Kaku T, Kamura T, Nakano H. Adenoma malignum of the uterine cervix detected by imaging methods in a patient with Peutz-Jeghers.
  2. Imaging description. Nabothian cysts, named after the German anatomist Martin Naboth who first described them in 1707 [1], are retention or inclusion cysts of the uterine cervix that probably develop when chronic cervicitis results in blockage to the ducts of the mucus-secreting glands of the endocervix [2,3]
  3. Developed by renowned radiologists in each specialty, STATdx provides comprehensive decision support you can rely on - Adenoma Malignum
  4. ant locule is also evident. 2 Gray‐scale transvaginal ultrasound image showing a multilocular lesion with solid component (arrows) within an enlarged uterine cervix with post‐acoustic enhancement, in a 30‐year‐old woman with adenoma malignum (Case 9). 3 Gray‐scale transabdo

Recently, magnetic resonance imaging (MRI) was reported as useful for its diagnosis, but differentiation of adenoma malignum from deep-seated nabothian cysts remains problematic Adenoma malignum has been associated with Peutz-Jeghers syndrome, ovarian mucinous tumor, and ovarian sex cord tumor. The most common symptom is a watery vaginal discharge [ 75 , 76 ]. On MRI, adenoma malignum appears as a multicystic lesion with a solid component located in the endocervical glands, which extends to the deep stroma, showing a. PURPOSE To evaluate the clinical, pathologic, and magnetic resonance (MR) imaging findings in adenoma malignum, a rare variant of uterine cervical adenocarcinoma. MATERIALS AND METHODS Medical records of all patients (n = 7) with adenoma malignum of the uterine cervix diagnosed pathologically between 1988 and 1996 were retrospectively reviewed Radiologic Evaluation of Incidentally Discovered Adrenal Masses. JONATHON M. WILLATT, MBChB, and ISAAC R. FRANCIS, MD, Department of Radiology, University of Michigan Health Systems, Ann Arbor. Minimal deviation adenocarcinoma (MDA), also known as adenoma malignum of the uterine cervix, accounts for only ~1% of uterine cervical adenocarcinomas. Adenoma malignum of the uterine cervix was initially described by Gusserow in 1870. Using magnetic resonance imaging (MRI), MDA appears as multilocular lesions with solid components that extend from the endocervical glands to the deep cervical.

The approach to the radiological and clinical evaluation of adrenal masses in the oncologic and non-oncologic patient is discussed. In addition, the value of unenhanced and enhanced CT densitometry with emphasis on the washout features to distinguish between lipid-rich and lipid-poor adenomas and malignant lesions is detailed. The roles of magnetic resonance imaging and positron emission. Classification of fibroids on magnetic resonance imaging (MRI). Mucinous carcinoma: such as adenoma malignum, which represents around 3% of adenocarcinomas. Transvaginal ultrasound (TVS) offers higher-resolution imaging and is the initial imaging study of choice

However, some tumors or tumor-like lesions can show similar MR imaging findings, such as adenocarcinoma, adenoma malignum, and florid endocervical hyperplasia. Therefore, a diagnosis should be made based on clinical manifestations in conjunction with imaging findings. 45. Thank You Description. Covering the entire spectrum of this fast-changing field, Diagnostic Imaging: Gynecology, third edition, is an invaluable resource for general radiologists, specialized radiologists, gynecologists, and trainees—anyone who requires an easily accessible, highly visual reference on today's gynecologic imaging. Drs Rarely, lactational adenomas can appear suspicious on ultrasound with irregular contours and posterior acoustic shadowing. 3 Lactational adenomas require tissue sampling or close surveillance with tissue sampling favored when imaging is atypical; although, there is a small risk for milk fistula after core biopsy Pseudoneoplastic glandular lesions are benign lesions that are often histologically and radiographically confused with adenoma malignum, which is a rare variant of mucinous adenocarcinoma of the uterine cervix. 15 cases of pseudoneoplastic glandular lesions, characterized by multilocular cystic masses in the uterine cervix, were investigated; these lesions included endocervical glandular.

Adenoma malignum of the uterine cervix: ultrasonographic

The most common organs of origin are: colon, stomach, pancreas, breast and lung. Most liver metastases are multiple, involving both lobes in 77% of patients and only in 10% of cases there is a solitary metastasis. Hypovascular metastases are the most common and occur in GI tract, lung, breast and head/neck tumors Presented by an international team of experts, the new edition of Diagnostic Imaging: Gynecology. features an exhaustive collection of imaging findings in gynecologic diseases.. It pairs state-of-the-art images with extensive correlative imaging between ultrasound, sonohysterography, hysterosalpingography, MR, PET/CT, and gross specimens, while a dedicated Techniques section is designed to.

Background. Adenoma malignum (AM), also called minimal-deviation adenocarcinoma, has been reported in the literature since Gusserow first described a very highly differentiated adenocarcinoma of the uterine cervix in 1870 [1,2].The word 'adenoma' describes the histologic appearance and the word 'malignum' the virulent and fatal progression of this tumor Discussion. Gastric-type mucinous adenocarcinoma is a newly characterized variant of mucinous adenocarcinoma with a gynecological origin. Gastric-type adenocarcinoma of the uterine cervix, also referred to as minimal deviation mucinous adenocarcinoma or adenoma malignum, represents ~1-3% of all endocervical adenocarcinomas (6,7).Kojima et al defined mucinous adenocarcinoma with gastric. The diagnosis of the remaining six hepatic adenomas was made based on the clinical history including the absence of risk factors for hepatoma, presence of microscopic fatty tissue, and typical imaging features with follow-up studies demonstrating stability (20, 21). In addition, all patients diagnosed with FNH or adenomas had none of the risk.

Imaging findings. Adrenal adenomas. Adrenal adenomas are the most common adrenal lesions, found in 3% of cases at autopsy. An important characteristic of adrenal adenoma is the presence of intracellular lipid. CT is the most sensitive and specific imaging modality for characterization of adrenal masses. As discussed above, an unenhanced. Keywords: Adenoma malignum, extremely well-differentiated adenocarcinoma of the cervix (mucinous, gastric type), On imaging, a transvaginal scan may reveal cystic or heterogeneous lesions in the cervical canal, but magnetic resonance imaging (MRI) are found to be most helpful

The MR imaging signal from Gelfoam is variable although it is often isointense to the pituitary gland with a hypointense center.[7] Both types of packing material show significant atrophy over time. Thus follow-up imaging is key for determining the presence of residual tumor. Differential Diagnosis of Pituitary Tumor Demonstration of an extrathyroidal artery leading to the adenoma and increases in peak systolic velocities in the inferior and superior thyroid arteries ipsilateral to the adenoma aiding in more accurate localization of the adenoma have all been reported. The other imaging modalities that can be used include scintigraphy, CT and MRI Cervical adenoma malignum is a mucinous type of minimal deviation Adenocarcinoma, with unusually well-differentiated glandular cell morphology similar to that of normal cells. The major symptoms it usually presents with are the passage of abnormal, usually mucinous vaginal discharge and vaginal bleeding. The case reported here presented with a history of the passage of mucoid vaginal discharge The liver is a complex organ involved in endocrine, exocrine, synthetic, and excretory function. Therefore, the liver is often a final common pathway for disease expression in inherited and metabolic disorders. Potential imaging features of metabolic disease that affects the liver diffusely include hepatomegaly, steatosis, and fibrosis

Large Multilocular Cystic Lesions in the Uterine Cervix

Hepatic adenoma Radiology Reference Article

Adenoma malignum is often associated with Peutz-Jeghers syndrome and mucinous tumors of the ovary 1-4 Adenoma malignum can appear deceptively benign at histology and imaging alike, but the prognosis is generally unfavorable as it disseminates to the peritoneal cavity early, and response to chemo- and radiotherapy is poor 18F-fluorocholine (FCH) PET/CT is a promising technique for visualizing hyperfunctioning parathyroid glands in hyperparathyroidism. It is still under debate whether to use this technique as a first-line imaging modality or to use it when conventional techniques such as 99mTc-sestamibi scintigraphy or ultrasonography are inconclusive. This study evaluates FCH PET/CT as a first-line modality Presented by an international team of experts, the new edition of Diagnostic Imaging: Gynecology features an exhaustive collection of imaging findings in gynecologic diseases. It pairs state-of-the-art images with extensive correlative imaging between ultrasound, sonohysterography, hysterosalpingography, MR, PET/CT, and gross specimens, while a dedicated Techniques section is designed to help. Adenoma malignum is a rare malignancy of the cervix, accounting for 1-3 % of cases of adenocarcinoma of the cervix [].Due to its well-differentiated nature, making the adenoma malignum glands difficult to distinguish from normal endocervical glands, it can appear deceptively benign on both clinical and histopathological examination and therefore has a high misdiagnosis rate []

Adenoma malignum of the uterine cervix: Imaging features

Radiological diagnosis was suggestive of adenoma malignum (AM) with a differential diagnosis of nabothian cyst. Ultrasound guided FNAC revealed benign endo cervical cells and no definite malignant cells. However, since the FNAC was done targeting the solid areas under ultrasound and revealed gland formation, malignancy could not be ruled out The findings of positron emission tomography combined with computed tomography (PET/CT) in a patient with FIGO stage IIA adenoma malignum of the uterine cervix are described in this article. PET/CT showed that the cervical tumor was intensely hypermetabolic with no evidence of disease spread MR imaging allows differentiation between endophytic and exophytic growth and between normal and abnormal findings after hysterectomy and irradiation. Other epithelial neoplasms of the uterine cervix include adenoma malignum, which is a special type of cervical adenocarcinoma, as well as carcinoid tumor and malignant melanoma Imaging study such as pulsed power Doppler and Magnetic Resonance Imaging are upcoming investigation modalities used for differentiating adenoma malignum from other cystic lesions of cevix5-7 . Currently genetic markers linked to chromosome 19pl3.3 are found to be associated with the Sporadic Form of adenoma malignum of the uterine cervix 7

Video: Multilocular Cystic Lesions in the Uterine Cervix: Broad

Magnetic resonance imaging of adenoma malignum of the uterine cervix with pathologic correlation: a case report By Alba Castán Senar, Blanca Paño, Adela Saco and Carlos Nicolau Cit Adenoma malignum of the cervix, also referred to as minimal deviation carcinoma / minimal deviation adenocarcinoma, is considered a rare variant of cervical mucinous adenocarcinoma.. Epidemiology. It is thought to represent ~1-3% of all cervical adenocarcinomas. It can present in a wide age group (~25-70 years) peaking at around 42 years Heterotopic Ossification of the Quadratus Lumborum Muscle. Accepted in the Journal of Radiology Case Reports, November 9, 2012. J McEachern, M Butcher, B Burbridge. Adenoma Malignum Detected on a Trauma CT. Accepted in the Journal of Radiology Case Reports, September 12, 2012 Summary: We here report a case of adenoma malignum of the cervix in a 59 year old woman with a 6 month history of a clear watery vaginal discharge. The tumor was an incidental finding in a hysterectomy specimen. Histological examination revealed irregular neoplastic glands formed by mucinous columnar epithelial cells with minimal cytological atypia and a focal stromal reaction Covering the entire spectrum of this fast-changing field, Diagnostic Imaging: Gynecology, third edition, is an invaluable resource for general radiologists, specialized radiologists, gynecologists, and trainees—anyone who requires an easily accessible, highly visual reference on today's gynecologic imaging. Drs. Akram Shaaban, Douglas Rogers, Jeffrey Olpin, and their team of highly.

importance of correct radiological diagnosis in (adenoma

Developed by renowned radiologists in each specialty, STATdx provides comprehensive decision support you can rely on - Cervical Glandular Hyperplasi Adrenal adenomas • Are the most common adrenal mass lesion and are often found incidentally during abdominal imaging for other reasons. • In all cases, but especially in the setting of known current or previous malignancy, adrenal adenomas need to be distinguished from adrenal metastases or other adrenal malignancies

Additional imaging included a neck ultrasound, parathyroid sestamibi scan and 4-D computerized tomography (CT) neck scan — all of these imaging modalities failed to localize a parathyroid adenoma. The patient's past medical history was significant for depression and primary hypothyroidism INTRODUCTION — Hepatocellular adenoma (HCA; also termed hepatic adenoma) is an uncommon solid, benign liver lesion that develops in an otherwise normal-appearing liver. Typically, HCAs are solitary and are found in young women in association with use of estrogen-containing medications. In addition, patients with glycogen storage disease or metabolic syndrome are at higher risk for developing. Final pathology was consistent with parathyroid adenoma. Calcium levels returned to normal on postoperative follow-up. IMAGING FINDINGS. A technetium-99m-labeled sestamibi parathyroid scan was performed to evaluate for a parathyroid adenoma. The scan was interpreted as absent for scintigraphic evidence for parathyroid adenoma (Figure 1)

The importance of correct radiological diagnosis in

20 mCi Tc-99m sestamibi planar imaging showed a solitary focus of uptake over right submandibular gland. The location for uptake in the right submandibular gland is uncommon for a parathyroid adenoma. Differential washout of tracer is seen from the immediate to the 3 h image with a clearer delineation of the lesion on delayed imaging parathyroid adenoma to guide the surgical approach; intraoperative PTH monitoring is used to confirm removal of the hyperfunctioning gland [2,9]. Therefore, the role of imaging in PHPT is to localize the abnormally functioning gland or glands with high accuracy and high confidence to facilitate targeted curative surgery. Importantly, imagin

Adenoma malignum of the uterine cervix: report of four

Imaging feature variables • Hounsfield units • homogeneous • heterogeneous VARIANT 2A NO CANCER HISTORY INDETERMINATE NODULE NO PRIOR IMAGING NONCONTRAST CT CT Findings Diagnosis Recommendation Up to 2 cm >10 HU homogeneous or heterogeneous Probable adenoma, possible pheo Clinical assessment for signs or symptoms of pheo A benign cortical adenoma is the most common adrenal tumor and they are almost always round. A cortical adenoma is an adrenal tumor that growes from the adrenal cortex -- the outermost layer of the adrenal gland. (see adrenal anatomy for more info). The gold standard of adrenal imaging is a CT scan (CAT scan) the adenoma. So it is not a post radiotherapy cyst or radiation necrosis (with a plateau curve) but a solid recurrence. 7 Prolactin microadenoma of a 27-year-old woman. It can only be visualized with a dynamic study and mainly with parametric imaging wash-in due to its delay in opacification compared to a healthy pituitary gland. It i 3. Imaging of pituitary adenomas Pituitary adenomas constitute approximately 10 to 15% of all primary intracranial neoplasms and are the most common causes of pituitary function disorders and field of view deficits. Therefore, early diagnosis and ther apy of patients with pituitary tumors are o Radiological diagnosis was suggestive of adenoma malignum (AM) with a differential diagnosis of nabothian cyst. Ultrasound guided FNAC revealed benign endo cervical cells and no definite malignant cells. However, since the FNAC was done targeting the solid areas under ultrasound and showed gland formation, malignancy could not be ruled out

On ultrasound, there was a 9-mm hypoechoic nodule posterior to the inferior left lobe of the thyroid (Fig. 1), and SPECT/CT showed residual high uptake in the corresponding area to localise the left inferior parathyroid adenoma (Fig. 1). Both biochemical and imaging findings supported the diagnosis of a brown tumour in the left mandible To evaluate the presentation of inflammatory hepatocellular adenomas (HCAs) on hepatocyte phase MRI. Materials and Methods. We retrospectively reviewed the MRI features of histologically proven HCAs on hepatocyte phase imaging. Twenty‐one lesions (17 with inflammatory subtype) were scanned with gadobenate dimeglumine

Adrenal imaging for adenoma characterization: imaging features, diagnostic accuracies and differential diagnoses. Park JJ et al BJR 2016 Boland GW, Lee MJ, Gazelle GS, et al. Characterization of adrenal masses using unenhanced CT: an analysis of the CT literature. AJR. 1998;171:201-4 Hepatocellular adenomas (HCAs) are currently categorized into distinct genetic and pathologic subtypes as follows: inflammatory hepatocellular adenoma, hepatocyte-nuclear-factor-1-alpha (HNF-1 α -mutated) hepatocellular adenoma, and β -catenin-mutated hepatocellular adenomas; the fourth, defined as unclassified subtype, encompasses HCAs without any genetic abnormalities BACKGROUND AND PURPOSE: Pleomorphic adenoma is the most common parotid neoplasm. It has a relatively high rate of recurrence after surgery. Imaging features of recurrent parotid pleomorphic adenoma have been infrequently reported in the radiology literature. In the present study, we reviewed our institutional experience with imaging of recurrent parotid pleomorphic adenomas

Minimal Deviation Adenocarcinoma of the Cervix: a Rare

gastric type, or adenoma malignum are ineligible.15 16 Tumor size, tumor extending to the internal os, stromal invasion, parametrial invasion, and the presence of lymphovascular invasion and extra-uterine spread are among the most important parameters when selecting patients who might benefit from fertility-sparing surgery In this video lecture, we discuss the imaging appearance of lipid-rich and lipid-poor adrenal adenomas, explain the CT washout calculation, and review the ch.. Most lactating adenomas can be assessed as Breast Imaging Reporting and Data System (BI-RADS) category 3, probably benign , with 6-month follow-up ultrasound; biopsy is required when suspicious features are present. Breast imaging radiologists should be familiar with the range of expected findings for lactating adenoma to ensure accurate. parathyroid imaging; 99m Tc-sestamibi; 123 I; simultaneous acquisition; subtraction; Primary hyperparathyroidism is the most common cause of hypercalcemia in otherwise healthy adults ().Historically, surgical excision of parathyroid adenomas required bilateral exploration of the neck ().With the advent of preoperative imaging, intraoperative parathormone assay, and hand-held γ-detectors, a. The rate of ectopic parathyroid adenomas ranged from 4% to 20%, and most authors found that SPECT/CT was superior to SPECT and planar imaging for localization of ectopic glands ( Figure 7 ). Most clinical protocols use both planar and SPECT/CT imaging

Adenoma malignum of uterine cervix in peutz-jeghers

An ultrasound of the neck. A scan that uses a drug called Tc-sestamibi. If imaging can localize to one parathyroid gland, the surgeon will look for that particular gland first during surgery. However, all four parathyroid glands need to be identified during the procedure. This imaging is very important in terms of surgical planning Radiology Imaging Associates, Englewood, Colorado. q Specialty Chair, Emory University, Atlanta, Georgia. The American College of Radiology seeks and encourages collaboration with other organizations on the development of the ACR Appropriateness Criteria through society representation on expert panels Pituitary adenomas are benign tumours of the pituitary gland and the third most common intracranial neoplasm. Around 30% are clinically non-functioning adenomas (NFA) that lack clinical and biochemical signs of hormonal activity (Even-Zohar and Greenman 2018).Due to the absence of signs related to hormonal hypersecretion, NFA usually present as macroadenomas (i.e. diameter ≥ 1 cm), causing. Focal nodular hyperplasia (FNH) and hepatocellular adenoma (HCA) are among the most benign solid neoplasms of the liver and have the highest incidence in young adolescent to middle aged women [].Especially for HCA, a correlation with intake of oral contraceptive pills (OCPs) has been reported [2,3,4].Reliable noninvasive differentiation by liver imaging is crucial as treatment differs for FNH.

Adenoma malignum of the uterine cervix: ultrasonographicAdenoma malignum of the cervix: MR imaging appearance

Hemorrhage into an adenoma can result in acute pain; Imaging Findings. Peripheral, rim calcifications suggests a benign lesion, especially a degenerated thyroid adenoma; Plain films may only show an enlarged thyroid displacing the trachea or calcification within a mass; Ultrasound is the initial study of choice for evaluating a thyroid mas Primovist Dosage of Primovist is comparably lower compared to non-specific agents - 0.025 mmol/kg vs 0.1 mmol/kg Leads to some timing challenges, with solutions including Dilution of the contrast into normal saline rather than a saline flush immediately following injection Doubling the dose to .05mmol/kg which can also used in patients wit RADIOGRAPHIC APPEARANCE. Ultrasound of the neck and sestamibi nuclear medicine scan to identify the presumed parathyroid adenoma revealed the previously diagnosed multinodular goiter but did not identify a parathyroid adenoma.However, computed tomography (CT) with 4-dimensional (4D) imaging revealed a soft tissue nodule posterior to the right thyroid lobe with the imaging characteristics of a. 1 Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China. 2 Department of Research and Development, Shanghai United Imaging Intelligence Co., Ltd., Shanghai 200232, China. 3 State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210093, Chin SUMMARY: We present 4 cases of carcinoma ex pleomorphic adenoma of the parotid gland. In 3 of the 4 cases, diffusion-weighted and apparent diffusion coefficient (ADC) mapping images clearly revealed carcinoma as a hypercellular area with low ADC values and pleomorphic adenoma as a hypocellular area with high ADC values. Diffusion-weighted images demonstrated well complex tissue components in. Imaging of cystic papillary adenoma. Ultrasound is the preferred way with the characteristics of noninvasive and economic for the check of gallbladder, and also is the screening examination way of the gallbladder adenoma at the beginning. 18 patients with lesions were characterized by clumps of medium echo, papillary